Genesis 39:21

The Lord was with Joseph. The same Providence that had attended Joseph in the house of Potiphar followed him to prison and brought comfort to him in his new affliction. Moses attributes the speedy favor he found in the sight of the keeper to the help of God. The irksomeness of his confinement must have been mitigated considerably by the jailer’s growing trust and confidence in him, since the blessing of the Lord attended all things committed to his care. Although Joseph had been treated unjustly, he made the best of the circumstances in which he found himself. By discharging his duties in a cheerful, courteous, and sympathetic spirit he gained the confidence of the one in authority, and at the same time prepared the way for his own eventual release.